Shuttle filling guide



NOV. 22, 1932. J CRAWFORD 1,888,817

SHUTTLE FILLING GUIDE Filed Jan. 18, 1932 J FIE /I I k I r 1 I Z 2 I INVENTOR John Cr aw ford MvW- ATTORNEYS Patented Nov. 22, 1932 UNITED STATES PATENT OFFICE- J'OI-IN' CRAWFORD, OF AMSTERDAIv/I, NEW YORK, ASSIGNOR 'I'O MOHAWK CARPET MILLS, INC., 01 AMSTERDAM, NEW YORK, A CORPORATION OF NEW YORK SHUTTLE FILLING- GUIDE Application filed J'anuary 18, 1932. Serial No. 587,229.

This invention relates to shuttles of the type commonly used in looms and is concerned more particularly with a shuttle having a novel yarn guide used with a tensioning means and so constructed that wear on the surfaces of the guide and tensioning device is distributed and prevented from becoming localized so as to produce grooves or projections.

In shuttles as now ordinarily constructed, the yarn passes from thecop or bobbin in the shuttle through a tension trap and thence out of the shuttle through an eyelet. As the shuttle is thrown in opposite directions, the yarn bears first against one side and then the other of the eyelet. These eyelets are ordinarily circular and the yarn tends to cut grooves in the opposite sides thereof by continuously bearing against localized areas. The tension trap which is located within the shuttle usually consists of two members between which the yarn passes and as the wear from the yarn is continuously on the same area, grooves also tend to wear in the yarn contacting members of this device. The amount ofwear depends to some extent on the type of yarn which the shuttle carries and some yarns, such as jute, are particularly harmful in their effects on the surfaces with which they contact in both the tension device and guide. Any wear in the tension trap causes the tension on the filling to vary, producing imperfect edges and uneven weaving in the fabric and constant attention is required to prevent the production of imperfect fabric. When the shuttle is used in a loom for producing pile fabrics, the varying tension also produces a varying binding action 'on the pile tufts. Localized wear resulting in slotting or cutting ofthe yarn contacting surfaces in the guide or tension trap causes the filling to break and this necessitates stopping the loom to repair the filling.

' The present invention is directed 'to the provision of a shuttle having a novel filling guide so constructed as to prevent localized wear both in the guide and in the tension trap, and thus prevent the formation of projections and indentations in the contacting tion, reference may be had tothe accomsurfaces, by distributing the wear from the yarn over a greater area. The new guide is formed to provide a passage for the filling in the shape of a slot instead of a circular hole as heretofore provided and the slot is so shaped that the drawing of yarn from the shuttle during weaving causes the yarn to move back and forth across the slot, thus spreading the wear over a considerable area and preventing local wear and the formation of grooves or ridges. This movement of the filling across the guide slot is continued back to the tension device and the filling moves back and forth across a substantial wear surface of the latter during the shuttle movement. As a result of the movement of the filling described, localized wear both in the guide and tension trap are prevented and, since the surfaces which contact with the filling have a substantial ex tent, not only is grooving of the eyelet and trap avoided, but also the life of the parts is greatly lengthened.

For a better understanding of the inven- 7 panying drawing in which,

Fig. 1 is a top plan view of a standard form of shuttle provided with my invention;

Fig. 2 is a longitudinal side sectional view of the shuttle illustrated in Fig. 1 with the cover removed;

Fig. 3 is an enlarged bottom plan view of a portion of the shuttle illustrated in Fig. 1;

Fig. 4: is a top plan view of the guide;

Fig. 5 is a view in side elevation;

Fig. 6 is a bottom plan view of the guide; and

Figs. 7 and 8 are sectional views on the lines 7- 7 and 8-8 of Fig. 6.

In the illustrated example, a shuttle constructed according to the principles of this invention comprises a body 10 having a recess 11 therein which contains a package or cop of yarn 12 and a tension device 13 consisting of a pivoted plate 14 resiliently urged against a crossbar 15 by a spring 16 so as. to tension the yarn which passes between the plate and the crossbar. The pivoted plate 1 1 carries a yarn guiding member 17 which prevents the yarn from slipping offof the plate. The

of porcelain but may be of steel, brass or other weanresisting material and may, if

desired, be an integral part of the shuttle body rather than a separate member em bedded therein. The opening 22 through which theyarn passes is in the form of aslot which extends transversely of the shuttle at its inner end and twists inside of the guide member so that it is at an angle to a line transverse of the; shuttle'at its outer end.

As will be'seen from Figure 3, when the yarn is pulled from the shuttle towards the forward'end' as is shown in full lines, the'yarn will tend to move towards one end 24. of the slot 22 and when theyarn is pulled from the shuttletowards the rear end thereof, the yarn will tend to move towards the opposite end 25-of the slot. In the-operation of the shuttle with the new guide on a loom, the yarn is drawn first in one direction and then in the other, and the yarn moves back and forth across: the slot and prevents wear from occurring in alocalized area and hence prevents the formation of grooves, slotsor proj ections. Y

The inner end of the guide slot 22, lying transverse of the shuttle, permits the yarn at this end to follow the movement of the yarn at the other end of the slot, and as the tension trap is located closely adjacent to the guide, the transverse movement of the yarn takes placein this device also and localized wear is eliminated here in a similar manner.

Having thus describedmy invention, what I claim is:

1. In a: shuttle, a receptacle for a yarn package and an elongated slot in the body of the shuttle through which the yarn is fed, said slot having a portion which is inclined to the direction of shuttle movement.

2. In a shuttle, a receptacle for a yarn package and an elongated slot in the body of the shuttle through which yarn is ted, the outer end of said slot being inclined to the direction of shuttle movement.

3. In a shuttle, a receptacle for a yarn pack age andan elongated slot in the body of the shuttle through which yarn is fed, the outer end of said slot being inclined to the direc tion of shuttle movement, and the inner end of said slot lying transverse to the long axis of the shuttle.

4. In a shuttle, the combination of a receptacle for a yarn-package and anelongated slot in the body of the shuttle through which yarn is fed, the outer end of said slot being inclined to the direction or" shuttle movement. and a tension device in said shuttle located adj acent the inner end of said slot.

5. In a shuttle, the combination of a receptacle for a yarn package and an elongated slot in the body of the shuttle through which yarn is fed, the outer end of said slot being inclined to the direction of shuttle movement, and the inner end of said slot lying transverse to the long axis of the shuttle, and a tension device in said shuttle comprising friction surfaces bearing against the yarn and located adjacent the inner end of said slot.

6. In a shuttle, the combination of a receptaclefor a yarn package and an elongated slot in the body of the shuttle through which yarn is fed, the outer end of said: slot being inclined to the direction of shuttle movement. and a tension device comprising a plate over which t'he'yarn is drawn lying adj acent the inner end of said slot whereby the movement of the yarn across the slot moves the yarn across the plate ofthe tension device.

7. In a shuttle, the combination of a receptaclefor a yarn package and an elongated slot in thebody of the shuttle through which yarn is fed, the outer end of said slot being inclined to the direction of shuttle movement, and the inner end of said slot lying transverse to the long axis of the shuttle, and a tension device comprising a plate over which the yarn is drawn lying adjacent the inner end of said'slot whereby the movement of the yarn across the slot moves the yarn across the plate of the tension device.

8. Ina shuttle, the combination of a shuttle body containing a receptacle for a yarn package, a block embedded in the shuttle body having an elongated slot through which filling yarn is drawn from the shuttle, the outer end of said slot being inclined to the direction of shuttle movement. 1

9. In a shuttle, the combination of a shuttle body containing a receptacle for a yarn, package, a porcelain block embedded in the shuttle body having an elongated slot through which filling yarn is drawn from the shuttle,

the outer end of said slot being inclined to" the direction of shuttle movement.

10. In a shuttle, the combination of a shuttle body having a receptacle for a yarn package, a tension device within said shuttlebody comprising cooperating members between' which yarn from said package passes, and an opening 111 the shuttle body for passage of said yarn, said opening having a transversely elongated outer end lying at an angle to the direction of shuttle movement.

11. In a shuttle, the combination ofa shuttle body having a receptacle for a yarn package, a tension device within said shuttle body comprising a pair of members between which yarn from said package passes, said members JOHN CRAWFORD. 

